41. Define winds. Describe the different types of winds with examples.
Answers
Answer:
The flow of air in a high speed is called wind.Planetary winds, prevailing winds or permanent winds are those which blow continuously in the same belt all through the year. They blow from high pressure belt to low pressure belts. There are three main types of planetary winds - the trade winds, the westerlies and the easterlies
Answer:
the perceptible natural movement of the air, especially in the form of a current of air blowing from a particular direction.
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Planetary Winds
Planetary winds comprise winds distributed throughout the lower atmosphere. The winds regularly blow throughout the year confined within latitudinal belts, mainly in north-east and south-east directions or from high-pressure polar-regions to low-pressure regions.
Trade Winds
These winds are also known as tropical easterlies and blow from the right in Northern hemisphere and to the left in the Southern hemisphere due to Coriolis effect and Ferrel’s law. They start blowing from the sub-tropical high-pressure areas towards the equatorial low-pressure belt. In the Northern hemisphere, they blow as northeastern trades, and in the Southern hemisphere they blow as southeastern trades.
The Westerlies
These winds are also known as Shrieking Sixties, Furious Fifties, and Roaring Forties. They blow from the subtropical high-pressure belts towards sub-polar low-pressure belts. The westerlies of Southern hemisphere are stronger and constant than the westerlies of Nothern hemisphere.
Periodic Winds
Land breeze: These winds blow from land to sea, carrying no moisture but dry and warm. Sea breeze: These winds blow from sea to land, carrying some moisture.
Mountain and valley breeze: Valley breeze is the hot air blowing from the valley which flows up to the slopes of mountain slopes.
Local winds
The local winds include the sea and the land breeze created due to the pressure difference between the air over the sea and the land regions. Loo is the local winds that blow in the northern part of India.
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